It seems like when you practice every day for a long time and then take a 2 or 3 day break you just take a HUGE step back. I don't think this is the case with any other istrument. Your endurance, range, tone suffer tremendously and it takes a few days just to get back in shape. Sometimes it's a little irritating when you have a job and othher activities and on certain days you'd really like to take a day off from playing trumpet, but then you understand that if you do, it will actually make it worse for the next day. Do you think it could be THE most demanding instrument that never really lets you take a break?